A steel rod with a circular cross section is used as a weight hanger. The straight part of the rod is 135-mm long and has a diameter of 4.6 mm. Determine the longitudinal strain in this portion of the rod when it supports a tensile load of 7.8 N.

A short column is loaded in compression. Segment (1) has a solid cross section with a diameter of 1.20 in. Segment (2) is hollow with an outside diameter of 1.48 in. and a wall thickness of 0.14 in. If segment (2) has a normal stress of 20 ksi, determine the normal stress in segment (1).

What behavior indicates that manatees can cross significant ecological boundaries?

A short column is loaded in compression. Segment (1) has a solid cross section with a diameter of 1.20 in. Segment (2) is hollow with an outside diameter of 1.58 in. and a wall thickness of 0.19 in. If segment (2) has a normal stress of 16 ksi, determine the normal stress in segment (1).

A steel rod with a circular cross section is used as a weight hanger. The straight part of the rod is 155-mm long and has a diameter of 4.9 mm. Determine the longitudinal strain in this portion of the rod when it supports a tensile load of 9.8 N.

Part 4. Problems (20 points, 10 points each)

KIN 6015 – Biomechanical and Neurological Basis of Human Movement   You were tasked by the PLNU Athletic Training Staff to measure the kinematics and kinetics of countermovement jumping of 15 women’s soccer players, 15 women’s volleyball players, and 15 women’s basketball players and now your research team is writing up the manuscript. Write the Methods section of this hypothetical completed study. Focus on the subjects, instrumentation, protocol, and analysis aspects of the study (i.e., motion analysis system, force plates, marker sets, subject movements, relevant dependent variables, research design, etc.). The team wishes to submit the paper to AJSM so details are key! 

How do Slone’s findings support the need for connected habitats?

Before an automotive engine is started, its timing belt has a length of 43.00 in. and a temperature of 70°F. At the engine operating temperature of 210°F, it is determined that the belt has elongated to 43.04 in. What is the coefficient of thermal expansion of the belt?

The rigid beam BC is supported by rods (1) and (2). For a uniformly distributed load of w = 2.2 kN/m, determine the force in rod (1). Assume a = 2.10 m and L = 3.75 m.